Swivel chair



FIG. 1 is a perspective view of a swivel chair showing my new design;

FIG. 2 is a front view;

FIG. 3 is a right side view;

FIG. 4 is a rear view;

FIG. 5 is a top view;

FIG. 6 is a left side view;

FIG. 7 is a bottom view;

FIG. 8 is a perspective view of a second embodiment of the swivel chair showing my new design;

FIG. 9 is a front view;

FIG. 10 is a right side view;

FIG. 11 is a rear view;

FIG. 12 is a top view;

FIG. 13 is a left side view;

FIG. 14 is a bottom view;

FIG. 15 is a perspective view of a third embodiment of the swivel chair showing my new design;

FIG. 16 is a front view;

FIG. 17 is a right side view;

FIG. 18 is a rear view;

FIG. 19 is a top view;

FIG. 20 is a left side view;

FIG. 21 is a bottom view;

FIG. 22 is a perspective view of a fourth embodiment of the swivel chair showing my new design;

FIG. 23 is a front view;

FIG. 24 is a right side view;

FIG. 25 is a rear view;

FIG. 26 is a top view;

FIG. 27 is a left side view;

FIG. 28 is a bottom view;

FIG. 29 is a front view of a fifth embodiment of the swivel chair showing my new design;

FIG. 30 is a right side view;

FIG. 31 is a rear view;

FIG. 32 is a left side view;

FIG. 33 is a top view; and,

FIG. 34 is a bottom view. 

The ornamental design of a swivel chair, as shown as described. 